Zack is the head leader of the Chuggineers.
Zack joins Chuggington to head up the Chuggineers. This foreman is organised, hard-working and extremely safety consious, making him the perfect leader of the Chuggineer crew and mentor to Brewster. Joined by his fellow team members Tyne and Fletch, this engineering team are responsible for all the heavy lifting, loading and building of bridges, tunnels, stations as well as laying track and making repairs.
Zack is based on a GE Dash 9-44CWL diesel-electric hybrid engine.